The two said this week that they had both made up their minds to support Trump after viewing the field of likely Democratic candidates running in 2020.

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“Look, there are things here — look, I’ve made it very clear that where I agree with the president, we will agree or where I disagree, we will disagree,” Gardner told IJR. “But I’m going to fight like hell for Colorado, and we’ve done some good things for Colorado."

Gardner, who beat an incumbent Democrat in 2014, faces a tough reelection race in a state Clinton won in 2016. Portman outpaced Trump in Ohio when he won his 2016 reelection race.

“I intended to support the Republican incumbent,” Portman added to IJR. "What changed? Well, he’s the incumbent. I mean, he’s in office, I work with him every day. I disagree with him publicly and privately when appropriate. But I also get a lot done, and I get that done with him. So we work with the White House, and I think that’s important for Ohio."